.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-white);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    color: var(--color-gray-900);
    transition: all var(--transition-fast);
    position: relative;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.1);
    border-color: transparent;
    background: linear-gradient(white, white) padding-box,
                var(--gradient-primary) border-box;
    border: 2px solid transparent;
}

.form-input:valid:not(:placeholder-shown) {
    border-color: var(--color-success);
    background-color: rgba(16, 185, 129, 0.05);
}

.form-input:invalid:not(:placeholder-shown),
.form-textarea.error,
.form-select.error {
    border-color: var(--color-error);
    animation: shake 0.3s;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
    font-family: inherit;
    line-height: 1.5;
}

.form-select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
    appearance: none;
}

.char-count {
    float: right;
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.switch-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.switch-input {
    position: absolute;
    opacity: 0;
}

.switch-slider {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    background: var(--color-gray-300);
    border-radius: var(--radius-full);
    margin-right: var(--spacing-md);
    transition: var(--transition-base);
}

.switch-slider::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: var(--color-white);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.switch-input:checked + .switch-slider {
    background: var(--color-primary);
}

.switch-input:checked + .switch-slider::after {
    transform: translateX(20px);
}

.switch-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
}

.radio-label {
    display: inline-flex;
    align-items: center;
    margin-right: var(--spacing-lg);
    cursor: pointer;
    user-select: none;
}

.radio-label input[type="radio"] {
    margin-right: var(--spacing-sm);
}

.radio-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
}

.setting-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    color: var(--color-gray-900);
    transition: var(--transition-base);
}

.setting-input:focus {
    background: var(--color-white);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

.setting-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    color: var(--color-gray-900);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
    transition: var(--transition-base);
}

.setting-select:focus {
    background-color: var(--color-white);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.filter-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-select,
.filter-search {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    transition: var(--transition-base);
}

.filter-select:focus,
.filter-search:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

.filter-search {
    min-width: 200px;
}

/* ハッシュタグ提案 */
.hashtag-suggestions {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
    border-radius: var(--radius-md);
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.suggestions-header {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-sm);
}

.suggested-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.suggested-tag {
    padding: 4px 12px;
    background: var(--color-white);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    color: var(--color-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.suggested-tag:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
}

.btn-text-small {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    float: right;
}

.btn-text-small:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(102, 126, 234, 0.3);
}

.form-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
}

/* カスタム日時選択 */
.datetime-picker {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.datetime-date {
    flex: 1;
    min-width: 150px;
}

.datetime-hour {
    width: 80px;
    flex-shrink: 0;
}

.datetime-separator {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-500);
}

.datetime-slot-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
    align-self: center;
}

/* 返信セクション */
.reply-section {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px dashed var(--color-gray-300);
}

.reply-section .form-label {
    color: var(--color-primary);
}

.label-hint {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-normal);
    color: var(--color-gray-500);
    margin-left: var(--spacing-sm);
}

.reply-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--spacing-sm);
}

.reply-delay-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form-label-small {
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
    white-space: nowrap;
}

.form-select-small {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--color-gray-700);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.3rem center;
    background-repeat: no-repeat;
    background-size: 1em 1em;
    padding-right: 1.8rem;
}

.form-select-small:focus {
    outline: none;
    border-color: var(--color-primary);
}

.char-count-small {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.form-hint {
    display: block;
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }

    .radio-label {
        display: flex;
        margin-bottom: var(--spacing-sm);
    }

    .suggested-tags {
        gap: 6px;
    }

    .suggested-tag {
        font-size: 11px;
        padding: 3px 10px;
    }

    .datetime-picker {
        flex-wrap: wrap;
    }

    .datetime-date {
        width: 100%;
        min-width: unset;
    }

    .reply-options {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
}